When browsing through the index, there's an ad that extends too long from the left side (just above the mode drop-menu) and it blocks alot of the thumbnail images in the main index. It looks as if the top banner ads are being placed in the wrong spot (top banner ads are still there and working fine btw). This has only appeared recently.
It's damn annoying. I'm not sure if it's been brought up yet (I had a quick look at the latest threads).
Can post a screenshot if needed.
Updated by memegui